Physical adsorption by mesoporous silica support has been widely used as a stabilization strategy of enzymes. The characteristics of support influence loading amount, activity and stability of enzymes. Considering size and charge on surface of DhaA, a suitable support based on molecular sieve SBA-15 was designed. The preparation process included hydrothermal synthesis, pore expansion and surface functionalization. An amino-modified support with disordered structure was finally achieved; whose pore size and window size were 5.6 nm and 3.8 nm respectively. The high loading and low leakage amount of DhaA were achieved by being adsorbed in this designed support. The catalytic activity and conformation of DhaA were still kept after adsorption. More importantly, the adsorbed DhaA had significant stability improvement in extreme denaturation conditions such as low pH, 3M of urea, 40% DMSO, and 30 days storage at room temperature. All the results suggested that it’s feasible to enhance the stability of enzymes by designing the appropriate adsorption support.